from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a device designed to prevent injury or accidents
Sorry, no etymologies found.
"When a spaceship goes down to the Jovian surface, it's a radio-controlled job; it leaks like a sieve, to equalize pressure, but otherwise it's the sturdiest, most utterly powerful model ever designed; it's loaded with every instrument, every servomechanism, every safety device the human mind has yet thought up to protect a million-dollar hunk of precision equipment.